Hydraulic-cylinder lubricator



(No Model.)

J. H. BROOKMIRE. HYDRAULIC CYLINDER LUBRIGATOR.

No. 426,762. Patented Apr. 29, 1890.

UNITED STATES PATENT OFFICE.

JAMES H. BROOKMIRE, OF ST. LOUIS, MISSOURI.

HYDRAULIC-CYLINDER LUBRICATOR.

' SPECIFICATION forming part oi Letters Patent No. 426,762, dated April29, 1890.

Application filed January 2, 1890. Serial No.335,578. (No model.)

class of hydraulic-cylinder lubricators in which the lubricant-holder isattached so as to move with the piston and piston-rod in their movementto and fro in the cylinder; and it consists in the special means forsupporting the lubricant-holder in position, substantially as ishereinafter described and claimed, aided by the annexed drawings, makingpart of this specification, in which Figure 1 is a longitudinal sectionof a hydraulic cylinder having the improved lubricator in position. Onlythat portion of the construction immediately associated with theimprovement and essential to an understanding of the improvement isillustrated. Fig. 2 is a cross-section of the same on the line z z ofFig. 1.

The same letters of reference denote the same parts.

A represents the cylinder of a hydraulic engine such as employed inoperating hoists.

B represents the piston, and C the pistonrod.

The cylinder and rod are of the usual'form, and the piston is also ofthe customary type, saving as it is modified or supplemented by theimprovement under consideratiom and which modification or supplementalfeature is substantially as follows: Upon that end of the piston towhich the lubricant-holder is to be applied the piston is provided withor is shaped to form a flange b. Aring or band D is adapted'to be passedonto the flange and the lubricant-holder E is held in position to applythe lubricant to the cylinder-surface a, by means of the ring D, whichbinds the 1nner portion of the holder against the piston end 11,substantially as is shown. The'preferable means for holding the ring orband D in place are the screws F, which pass through the band or ringandare tapped into the piston. The flange b is in effect a bearing forsupporting the lubricantholder; but said bearing in aynot directlysupport said holder that is, it may support the ring or band D, which inturn may bind the holder against the piston end Z2, so that the inneredge of the holder shall not be in contact with said bearing,'and inthat case the screws F or whatever fastening is used to secure the ringor band to the piston may serve to hold the ring or band-in place, andthereby cause the lubricant-holder to be bound or clamped to the pistonend irrespective of the piston-flange; but I prefer the constructionshown.

I claim I The combination of the piston having at one end the concentricannular flange b, thering fitted and movable upon said flange, theannular lubricant-holder between the ring and the adj acent end of thecylinder, and the bolts passing through openings in the ring and throughthe lubricant-holder and engaging in threaded recesses in the adjacentend of the piston, substantially as specified.

\Vitness my hand this 24th day of December, 1889.

JAMES H. BROOKMIRE. Witnesses:

O. D. MOODY,

D. W. A. SANFORD.

